Extractor



0d. 3, 1950 l T, s. WATSON 2,524,614

ExTRAc'roR Filed Nov. 29, 1944 2 Sheets-Sheet l Q Se Q3 ululllmunn111111111111111 I I 1 11m 111|.

I N VEN TOR.

Patented Oct. 3, 1950 UNITED STATES PATENT OFFICE 2,524,614 EXTRACTOR Thomas S. Watson, Milwaukee, Wis., assigner to Huebsch Manufacturing Company, Milwaukee, Wis., a corporation of Wisconsin Application November 29, 1944, Serial No. 565,763

3 Claims. l

The invention relates to compression extractors and more particularly'to that type of cX- tractor in which fluid pressure exerted against a flexible diaphragm compresses the material operated upon between said diaphragm and an apertured portion of an enclosing casing to eX- tract liquid from saidmaterial. Extractors of this kind have been found to have advantages for extracting water from laundry and for reducing the liquid content of brewery mash, so that the waste mash solids may be used as a feed product, and they may be used in other arts or processes Where reduction of the liquid content oi a compressible material is desirable.

The object of this invention is to provide a new and improved cover arrangement for extractors of the type above described wherein the cover is fixed and the container is mounted for swinging into an operative covered position or into a loading position and in some instances to a dumping position. With such a construction, the

cover may be made of heavy construction to better resist the heavy loads imposed on it.

rThe invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a front elevation view of a device embodying the invention, parts being shown in section;

Fig. 2 is a side elevation View of the device, parts being broken away and parts being shown in section;

Fig, 3 is a vertical sectional View taken on the line 3-3 of Fig. 2;

Fig. 4 is a detailed vertical sectional view of parts shown in Fig. 3 showing certain modifications.

Referring to Figs. 1 to 3 of the drawings, the extractor comprises a metal walledV container 5 having a grooved rim 6 at its top and an opening l in its bottom communicating with a pressure supply and exhaust passage 9 in a pipe it having a boss ll secured in duid-tight engagement with the bottom of the container and having portions pivotally mounted to turn in bearings in frame up-rights i2, the container being further supported by side brackets I3 secured to it and to the pipe I0. The exterior closed. end of thel pipe itl carries a gear I l meshing with a segmental gear i5 pivotally mounted on a shaft i@ secured to one of the uprights I2 and connected to an operating link ll which may be operated manually or by power, for example by an hydraulic cylinder such as shown in my copendn ing application Serial No. 558,255, filed October 11, 1944. The other open end of the pipe In is connected by a suitable coupling iii with a fixed pipe i9 equipped with a valve 2i] which controls the inlet of pressure fluid from a pipe 2| and the outlet of said fluid through a pipe 22, said valve being shown as manually operated through a rotatable shaft 23 and a lever 2t connected there` to', though it may be power operated as shown in the aforesaid application. The pipe 2i is connected to a suitable source of pressure duid, such as water, steam, or compressed air.

A bag 25 of rubber composition or other suitable flexible material fits within the container, and its rim 26 is adapted to i-lt in a groove in the rim t and be clamped therein by a clamping ring 2l secured to the rim 6 by a plurality of screws 28. Usually the cover is secured on top of the ring 2l, but in the present instance I have shown the casing extension 29y similar to that oi the aforementioned application which includes the ring 2l as its base and at the top oi which a cover 3) is mounted in the extracting position of the device. The extension 29 is preferably provided with a plurality of drainage openings 3| and practically doubles the capacity of the extractor without increasing the size of the bag 25 over the usual machines of this type. At its upper end the container is formed with a wall extension 32, spaced from the extension 29 and connected to the container body by a wall 33 to provide a drainage space 34 connected at lits lower end to a drain spout tting 35 which discharges into a Xed funnel 36 secured to a drain pipe 3l. The container is preferably round in cross section.

The cover 3G has a rim portion 38 adjacent the rim 44 of the wall extension 32 and a foraminous or apertured metal lining member 40 spaced from but secured to the bottom of the cover by screws (not shown) passing through spacing sleeves 4i, said lining tting over the top of the extension 29. The space between the lining and the cover bottomY communicates with the drainage space 34 between the tops of Wall and casing' eXtensions. The cover is supported in fixed position by connection of its top with a transverse beam 42 secured at its ends to the uprights l2. The bottom oi the cover rim 38 and the member 40 are curved on a radius having as its center the center of oscillation of the container which in the present instance is the center of the pipe I0, and the rims 43 and i4 of the casing are similarly curved, so that the container may be tipped or swung outwardly toV one side of the cover to receive or discharge its load. In order that too close a sliding t between the top of the casing and the cover may not be necessary, and in the case of ne material such as brewery mash to prevent escape of the solids, sealing means are provided between the cover and the casing.

The sealing means includes an endless rubber tube 45 mounted in a recess 46 in the rim 43 and a similar tube 41 mounted in a recess 48 in the rim `44, said tubes when inflated with pressure iluid acting on said rims and the adjacent parts of the cover to prevent escape of uid from the joints between the cover and the casing. The tubes 45 and 41 are connected by piping 49 with a pipe 59 connected to the pipe I0, so that when the high pressure fluid is introduced into this pipe to raise the bag 25, it will also cause the tubes 45 and 41 to exert a sealingA pressure as above described. If desired, the supply of pressure' fluid for the seals may be separate from that for the bag and separately controlled.

Where the material operated on consists of fine particles, a filter member 5| may be suitabli7 mounted against the inner wall of the extension 29, and a similar lter member 52 may be secured against the inner side of the lining 40 by a clamping frame 53 secured to the cover as shown in Fig. 4, the same screws (not shown) at the marginal edges of said member 40 and passing through the spacing blocks being used for holding f said frame 53.

With the above described construction when the container is tipped to bring its open end outside of the cover as shown in the upper dotted line position in Fig. 1, it is in a loading position, In the case of laundry the clothes carried by a suitable holder are then dropped into the container, and in the case of nely divided material such as brewery mash a spout 54 then registers with the top of the casing. After being loaded, the container is tipped back to the full line position in which its open end registers with the cover 30, and the valve is then opened to allow fluid under pressure from the pipe 2| to flow through the pipes I9 and l0 into the space between the bottom of the container 5 and the bag 25, thus forcing the bag together with its contents upwardly and squeezing or compressing the material between the bag, the container, and the cover so as to force the liquid content of the material out through the holes 3| in the casing 29 and the openings in the cover lining into the space 34 from which it is drained through the spout 35 at the same time some of the fluid pressure passes through pipes and 49 to the tubes 45 and 48 to seal the joints between the top of the casing and the cover. Thereafter, the valve 20 is turned to cut ofi the pressure fluid from the pipe 2l and open communication with the pipe 22, so that the fluid between the bag and the container 5 may be released. Then the container is swung outwardly from beneath the cover to an unloading position either to the upper dotted line position shown in Fig. 1 in the case of laundry or downwardly to the lower dotted line position in the case of brewery mash or similar materials to a dumping position.

While the use of an apertured cover and extension is preferred, in some instances either the cover or the extension alone may be apertured to 4 allow the waste liquid to escape from the casing. I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claims.

What I claim as my invention is:

l. In an apparatus of the character described, the combination of a casing having an open end, a exible bag mounted in said casing for movement oi its body toward said open end, there being a space between said casing and said bag for receiving pressure fluid, a fixed cover for the open end of said casing, means at the bottom of said casing for tiltably supporting said casing so that it may swing into and out of register with said cover, said supporting means having a passage directly connected with the lower end of said casing for the introduction of pressure fluid into the casing below the bag and its exhaustion therefrom, and means for draining waste iiuid expelled from the material in the bag.

2. In an extracting apparatus of the character described, the combination of a casing having an open end, a support, said casing having a supi porting bearing associated with it at its bottom in the form of pipe pivotally mounted on said support and communicating directly with the lower end of said casing, a flexible bag mounted in said casing for movement of its body toward said open end, a xed cover registering with the open end of said casing in extracting positionl and from which said casing may be swung to loading position, and means for draining waste fluid expelled from the material in the bag, said pipe forming a passage for the introduction of pressure fluid into the casing below the bag and exhausting it therefrom.

3. In an apparatus of the character described, the combination of a casing having an open end, a flexible bag secured to the open end of said casing, there being a space between said bag and said casing for receiving pressure iiuid, means for introducing pressure fluid into said space and exhausting it therefrom, an apertured extension for said casing above the connection of said bag to said casing, a xed cover for the top of said extension and independent thereof, said means for introducing pressure fluid constituting bearing means at the bottom of the casing for pivotal mounting of the casing so that said extension may swing into and out of register with said cover, and means for draining waste iluid expelled from the material in the bag as said bag with its contents is moved by said pressure fluid toward said cover.

v THOMAS S. WATSON.

REFERENCES CIED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,111,974 Schuster Sept. 29, 1914 2,273,304 Watson Feb. 17, 1942 FOREIGN PATENTS Number Country Date 490,691 GreatBritain Aug. 19, 1938 570,580 Germany Feb. 17, 1933 

